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Finding the Fourth Proportional to 92,127.64, 138,190.96 and 79,609.60

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Solution

The fourth proportional to 92,127.64, 138,190.96 and 79,609.60 is: 119,413.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,127.64 : 138,190.96 = 79,609.60 : x
  2. Step 2: Convert to fraction form
    92,127.64/138,190.96 = 79,609.60/x
  3. Step 3: Cross multiply
    92,127.64x = 138,190.96 × 79,609.60
  4. Step 4: Simplify right side
    92,127.64x = 11,001,327,049.22
  5. Step 5: Solve for x
    x = 11,001,327,049.22/92,127.64
  6. Step 6: Final answer
    x = 119,413.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.